Balanced door



Nov. 5, 1935. E. H. ELLISON 2,019,523

BALANCED DOOR Filed July 30, 1952 4 Sheets-Sheet 1 1 E- l as 52 54 s3 246 4 41 4-2 ;k ;%fi:: n i m y EDWARD.H. ELLISON I BMW 4 M dal ATTORNEY SNov. 5, 1935.

E. H. ELLISON BALANCED D0011 Filed July 5O, 1952 4 Sheets-Sheet 2INVENTOR' EDWARD H ELLISON BY Miami ATTORNEYS E. H. ELLISON Nov. 5,1935.

BALANCED DOOR Filed July 30, 1932 4 Sheets-Sheet 3 INVENTOR v EDWARD H.ELLISON @kMvW ATTORNEYS E. H. ELLISON Nov. 5, 1935.

BALANCED DOOR Filed' July so, 1932 4 Sheets-Sheet 4 INVENTOR ATTORNEYSand other disturbing influences and also to ren-.

Patented Nov. 5, 1935 BALANCED DOOR Edward H. Ellison, Jamestown, N. Y.,mimito Ellison Bronze Company, Inc., Jamestown, N. Y., a corporation ofNew York Applicatioii luly so, 1932, Serial No. 627.061.

30 Claims.

This invention relates to what I shall describe as panic releasing meansfor doors mounted to normally slide and swing to opened and closedposition; that is, doors adapted to slide and swing about an axisdisposed between the edgesthereof such that one edge of the doornormally swings inwardly and the other edge normally swings outwardlywith respect to the doorway when the door is opened.

More specifically, the invention comprises in ,combination a releasingmechanism to be hereinafter described, a door, and door mountingconstruction, wherein the door is balanced to normally render the sameeasy to open and easy to maintain closed against high wind pressures derthe door operable to open and close as the ordinary swinging door in thecase of an emergency.

Where doors, hinged at one edge thereof, are used in entrances andvestibules of ofiices or other public buildings, they are required toswing outwardly and the wind'pressure thereagainst often makes them"extremely diflicult to operate. In doors of this character, doorclosers must be used which exert enough pressure on the doors tomaintain them closed against wind pressure from the inside due tocurrents of air outwardly through the vestibule. The pressure requiredin these door closers and the outside wind pressure adds to thedifliculty of opening the doors and frequently is objectionable.

In balanced doors like those to be hereinafter described, wherein partof the door swings outwardly while another part swings inwardly, thedoors are adapted to work easily under all conditions of wind pressure;however, such a door could not be operated if pressure were exertedsimultaneously at each edge thereof from the inside because an insidepressure at one edge tending to open the door would be counteracted byan inside pressure at the other edge tending to maintain the doorclosed. Since this condition is apt to obtain in cases of panic whenbalanced doors are used in schools, theatres or other public buildingswhere large numbers of people con-p gregate, I have devised themechanism whichis the subject matter of my present invention, to permita balanced door to swing outwardly to open as an ordinary door, that.is, hinged at' or proximate one edge thereof, as occasion requires. vThe structural features of my present invention are such that all of theparts may be conveniently contained within the door to avoid ungightlyprojections and irregular contours and I purpose of my device.

(Cl.20--16)' v to permit free application of architectural de sign, Thedoor construction is further adapted to receive all modern improvementswhich it is desired to add thereto and'is of adequate strength towithstand the stresses and strains imposed 5 thereon when in use.

An object of the invention, accordingly, is to provide a panic releasingmechanism for doors in combination with an improved door mounting means,whereby wind pressures upon the sides 10 of the door may normally beequalized and reduce the force necessary to open said door.-

Afurther object of the invention is to provide a construction of theabove character wherein the releasing means, the mounting means and 15auxiliary elements are maintained within the door and doorway in orderthat the architectural design and beauty of the door may be preserved.

, A further object of the invention is to provide an improved doorreleasing mechanism which is 0 adapted to permit a door mounting to beoperably converted from that which I shall describe as balanced dooroperation to that of hinged door operation and vice versa without theuse of special tools and the like; and the further object 25 ofconstructing in combination with said door mounting, means for closing adoor carried by said mounting when the device is operated as a balanceddoor; said means being also adapted to hold said door open when thedevice is operated 30 as a hinged door.

A further object of the invention is to provide an improved holding ordetent mechanism for holding a balanced door, equipped with a releasingmechanism, in its open position in com- 35 bination with means forvarying the forces necessaryto actuate said mechanism and correlate theoperation thereofto accomplish the two-fold Further objects notspecifically enumerated 4.0 above will become apparent from thefollowing description of my invention, or will be specifically referredto in connection with the accompanying drawings, in which .Figure 1 isan inside elevational view of a 46 pair of doors, showing a doorreleasing mechanism constructed in accordance with the present inventiontogether with the means for operably hanging and supporting said doorsfor either a compound movement of rotation and transla- 50 tion, or themovement of rotation, alone through which the doors may be opened andclosed.

- Figure 2 isaview in section taken on line 2-2 of Fig. 1 looking in thedirection of the arrows, showing a plan view of the door mountas ing andreleasing mechanism for a pair of doors- A and B.

Figure 3 is a view similar to Figure 2 showing door A after it has beenrotated, moved or pushed outwardly to a fully opened position after-thepanic release mechanism is operated, released or. disconnected, and doorB after it has been moved by a motion of rotation and translation to.fuily opened position in the normal operation thereof as a balanceddoor.

Figure 4 is a view similar to Figure 2 showing the door A after it hasbeen moved from the position above shown in Figure'3, to a positionwhere the releasing mechanism is about to be latched so as to permitsaid door to again be operated as a balanced door or be 'panicallyreleased, so to speak, as occasion requires.

Figure 5 is an enlarged elevational view showing the parts comprising mydoor releasing mechanism as assembled on a door in a doorway.

Figure 6 is a view in section taken on a line 6--6 of Figure 5 andlooking in'the direction of the arrows.

Figure 745 a view in section taken on line 1--1 of Figure 5 and lookingin the direction of the arrows.

Figure 8 is an elevational view taken on a line 88 of Figure 3 showingthe detent mechanism for holding the door in its open position when itis operated as a balanced door.

Figure 9 is a. plan view of the mechanism shown in Figure 8.

Referring to the above drawings, it will be seen that doors of anydesired shape and construction are illustrated at 20. Push bars 2| aremounted on the inside thereof in the usual fashion and are adapted torespectively operate latches 22, which secure one of the doors in thedoorway 23 at the top and bottom thereof, or a latch 24 adapted to lockone door to the other. The doors 20 are swingably and slidably mountedin the doorway 23, which is formed by a floor or sill 25, cornice 26 andhollow mullions 21, on a hinge shaft 30, see Figures 5 and 8, and upperand lower arms 3| and 32 which are shown as formed integral with thehinge shaft or which may be welded or brazed to the ends thereof.Substantially the greater part of two faces of the mullion 21 is cutaway at the top and bottom thereof to form hinge arm recesses for thearms 3| and 32. In either case however, the arms are adapted to extendlaterally from the hinge shaft 20 in a manner to be hereinafterdescribed. Each door 20 is adapted to swing or rotate on a verticalaxis, disposed intermediate the edges thereof, passing through the endsof the arms 3| and 32. Preferably abracket 33, secured to the bottom ofthe doors 20, is adapted to cooperate with the arm 32 to support thedoor and the upper part of the door is secured to the arm 3| by means ofan operating shaft 34, see Figures 6, '1, and 9, of a door closer anddoor check 35, see Figures 5 and 8, mounted near the upper edge of thedoor. The hinge arms 3| and 32 are preferably shown as being secured tothe hinge shaft 30, although they may be independently mounted ifdesired.

Since the details of construction of the hinge shaft 30, bracket 33 anddoor closer 35, per se, form no part of my present'invention, sufice itto say that they are shown and described in my pending application forU. S. Letters Patent Serial Number 595,324 filed February 26, 1932 andentitled Balanced doors. For an understanding of my present invention,however, it is suflicient to note that the hinge 30 is rotatablysupported by a step bearing 36 mounted in the floor or sill 25 and a pin31 mounted in a bearing 40 at the top of the doorway, see Figures 1 and5; also, that a torsion spring 38 is suitably mounted in the hinge 30 bymeans, 39 and 39a, for connecting 5 the ends thereof to the hinge 30 anda fixed point on the step bearing 36. The spring 38 is adapted to urgethe hinge 30 and arms 3 I32 in the same direction at all times forreasons hereinafter explained. The bearing 40 is located in one end 10of a channel bracket 4| mounted within the cornice 26 and thus the doors2!! are hung in asuitable manner on the hinge shaft 30, arms 3| and 32and adapted to operate in a manner to be hereinafter described. 15

The sliding movement of the door, or what I shall describe as themovement of translation thereof, is guided by means of a ball bearingroller 42, see Figure 5, journalled upon a stud shaft 43 mounted uponthe top of the door 20 in a manner 20 to be hereinafter described. Theroller 42 is adapted to travel in the channel bracket 4| which ismounted within the sofiit of the cornice 26 by means of screws 44 anddepending lugs 45, adapted to fit into the top of the mullion 21, seeFigures 25 5, 8, and 9. The roller 42 thus imparts sliding movement tothe door while the hinge shaft 30 and the arms 3|, 32 impart a swingingmovement thereto, or a movement of rotation about the axis of saidroller as will become apparent from 0 the following description.

The arms 3l-32 in combination with the portion of the door between theaxis of the shaft 34 of the roller 42 constitute a toggle which isutilized to facilitate the closing of the door. 35

Referring now to Figures 5 and 6, it will be seen that within the upperwall of the channel bracket 4| a detent mechanism or door holder 46 ismounted to rock on a shaft 41 carried by lugs 50. The detent is held inthe desired position by 0 means of a plunger 5| having a roller 52slidably mounted in lugs 53. A spring 54 is suitably and adjustablydisposed around the plunger 5| to urge said roller against the face ofthe detent at all times. A shoulder 55 is formed on the detent 46 45 andis adapted to be disposed in the path of the roller 42 as shown inFigure 5, and occupies a position such that it will be engaged by theroller 42 when the door is almost fully opened. In other words, when thedoor is pushed. to fully open posi- 50 tion the roller 42 is adapted torotate the detent 46 in a counterclockwise direction to permit theplunger roller 52 to snap into a notch 56 under the influence of thespring 54, see Figure 8. It is important to have the plunger 5|retracted so that 55 it will slip into the notch 56 with comparativeease and operate with less pressure than that required to operate thepanic release latch, to be hereinafter described, because there is nooccasion to actuate the panic release mechanism when 60 the door hasbeen opened as a balanced door and is about to be held open by thedetent. The door will be thereafter held in the fully opened positiondue to the fact that the detent has rotated sufficiently to position asecond shoulder 51, formed on the detent 46, in front of the roller 42.To close the door, when it occupies the position shown in Figure 8, itis necessary to pull the same toward the shoulder 51 with sufflcientforce to depress the plunger 5| and thereby rotate the detent in aclockwise direction to the position shown in Figure 5.

Referring now to Figures 2, 6, and 7, it will be seen that I provide anarm 60 hingedly secured at 6| to the inside of the door near the topthere- 7 of. Theroiler 42 and stud 43 above described are secured to anoffset portion 92 formed near the end of -the arm 63 remote from thehinge'6lt.

The offset portion 62 is adapted to enter a recess 63 formed in the topof the door to position theroller 42, located in a channel 64 formed inthe channel bracket 4 I; above the top of thedoor and also to permit theremainder of the arm 63 to lie in connection with door B of' Figure 3when the doors are opened. Tohold the arm 69 in normal position as abovedescribed, I provide a latch 65 mounted at the top of the'door andadapted to cooperate with a roller 66 mounted on the arm 69 on avertical shaft 61 just beyond the roller 42. The latch 66 is mounted ona latch plate 19 and is provided with a latch rod 1| adapted to slidefreely in an externally threaded adjustment bushing 12 screwed in a lugI3 formed on the latch plate 10. The head of the latch 66 is slotted asat 14 to receive a roller 16 mounted on a stud l6 rising from a boss IIat one end of the latch plate 19. A plate 69 is fastened by means of ascrew to the end of the stud 16 to retain the latch 66 and roller 16 inposition to reciprocate to and fro as hereinafter described.

A spring 3 disposed around the rod I l between the bushing 12 and thelatch 65, is adapted to urge the latch toward the hinge shaft 39. Theend of therod II is threaded to receive lock nuts 82 to retain andadjust the latch 65 in position as desired. It will be seen that thepressure exerted by the spring 9| on the latch 65 may be varied bymoving the adjustment bushing I2 with reference to the latch. Moreoverit will be understood that the resiliently mounted plunger 6|, having aroller 62 adapted to cooperate with the detent 46, above described inconnection with 94 to permit the roller 66 'to depress the latch asoccasion requires and'permit the door to swing outwardly away fromtheroller 42 and also to again engage the same in a manner to behereinafter described. The end 35 of the offset portion 62 of the arm 69is adapted to lie against one side of the latch 65 when the roller 66 isin latched position, see Figures 6 and 7. A hold down clip 86, securedto the top of the door is adapted to fit over a clip seat 31 formed onthe arm 69 to lend rigidity to the parts in latched position andpreventthe arm .69 from being inadvertently sprung or, distorted tocause the roller 42 to drag in the bottom of the channel 64.

The operation of my device as thus far described may be understood byreferring to Figure 2 wherein it will be seen that when one desires toopen the door 13' normally, that is, as abalanced door, it may be doneby pushing on the bar 2| or pulling on the handle 99 whereby the edgesof the door will begin to move in the direction of the arrows C and Drespectively by rotating or swinging about the roller 42. As the doorstarts to open by this rotating movement a result of thiscompoundmovement which, in the particular construction shown herein, gives acombined .sliding and swinging movement, or movement of translation androtation, the door B will be moved from the closed position shown at theright hand side of Figure 2 to the open position shownin Figure 3.Although the particular construction shown herein utilizes a combinedsliding and swinging movement, any bodily shiftable movement of the dooris contemplated. 1o Referring now to Figure 9 wherein the door B isshown in open position. it will be seen that the arm 3| is formed withan offset portion 9| to form a clearance depression or recess 92therein. A leaf 93 carried on a hinge pin 94, suitably mounted on thearm 3| near the mullion 21, is provided to close the opening to theclearance de: pression 92. The leaf 93 is adapted to be normally held inthe position shown in-Figure 9 by 7 means of a spring 95 against a stop96. It will be understood that the lower arm 32 is equipped nism will beunderstood by reference to door A in Figures'2 and 3 wherein it will beseen that when pressure is simultaneously applied at each edge of thedoor from the inside thereof, such for instance as in the direction ofthe arrows E and F, 95 the latch 65 will be depressed against the forceof the spring 8| and permit the door and arms 3| and 32 to rotate aboutthe hinge shaft and vpin 31 in the mullion 21 to the position shown atthe left handside of Figure 3. It will be understood that as soon as thelatch 65 is unlatched from the roller 66 on the arm 60, that the armwill rotate onthe hinge 6| and render the roller v 42 inoperative as anaxis or" means about which the door may rotate as before and to causethe 46 movement of translation as above described, be-

cause the roller 42 is then disconnected from the door although saidroller is still confined in the channel 64. When the door A is openedthe arm 69 will occupy a position similar to that just described. en itis desired. to close the door, after having beenpanically released, soto speak, it may be closed as an ordinary door by pulling on the bar 2|or pushing on the handle 99 with the result that the doors will swing orrotate about the hinge shaft 39 and the roller 42 will move to the righthand end of the channel 64. Figure 4 shows theposition of .the latch androller 65-66 about to be latchably engaged to enable the door to beoperated again, either as a normal balanced 0Q door, or, as occasionrequires, to swing outwardly as just described.

From Figure 3 it will be seen that the clearance space 92 in the arm 3|is provided to permit the arm to swing around the outside edge of 0 themullion without interference and in so doing thaat the edge of themullion depresses the leaf Referring now to Figure (,itwill be seen thata slide 93 is mounted in the mullion to guide the leaf 93 and permit itto-slide back and forth over the edge of the mullion as the door isopened and closed.

It will be understood that'the. torsion spring 33. seeFlg.Lmountedinthehinge II-isadaptedto II urge the hinge, in the case of door13 in Figure 3, at all times in a; counter-clockwise direction and thatwhen said door is not held open by the detent 46 that said spring isadapted to close the door. It will also be understood that the doorcheck 35 is adapted to, soften the closing.

of the door. In the case of the hinge on which door A of Figure 3 ismounted the spring 38 is adapted to rotate the hinge 30 in a clockwisedirection at all times in order to close that door when it is operatedas a balanced door; and hold the door open after it is panicallyreleased, for instance, in the case of door A, which is shown in itsreleased position, the spring 38 continues to tend to rotate the shaft30 in a clockwise direction and in this case the spring holds the dooropen. It will be understood that if door B were panically released tooccupy a position similar to that of door A, that the spring in thehinge of said door would tend to turn the hinge 30 in acounter-clockwise direction and hold that door open. It will thereforebe understood that with a single spring mounted in the hinge 30 incombination with my door mounting mechanism, I am able to provide meansfor closing the door when it is operated as a balanced door, said meansalso being adapted to hold the door open when it is operated as a hingeddoor.

While I have described what now seems to me to be the preferredembodiment of my invention, it will be understood that the mechanismhere shown and described is merely exemplary of one application thereofand that the same is susceptible of modifications without departing fromthe spirit of my invention or the scope of the appended claims.

What is claimed is:

l. A device of the class described, comprising mechanism for mounting adoor to be opened mechanism for mounting a door in a doorway whereby oneportion of said door is movable inwardly and another portion of saiddoor is movable outwardly with respect to said doorway when said door isopened, said mechanism comprising an axis releasably secured to saiddoor, in combination with means for releasing said axis from said doorwhereby the entire door may be moved outwardly as occasion requires.

3. A device of the class described, comprising mechanism for mounting adoor between the vertical edges thereof in a doorway whereby one portionof. said door is movable inwardly and another portion of said door ismovable outwardly with respect to said doorway when said door is opened,said mechanism comprising a plurality of axes for guiding the movementof said door, in combination with means readily releasing the control ofone of said axes to permit both portions of said door to be movedoutwardly about one of said axes.

4. A device of the class described, comprising mechanism for mounting adoor in a doorway, said mechanism comprising means aflixed to said doorbetween the vertical edges thereof whereby the portion of said doorbetween one edge thereof and the point to which said means is aflixed ismovable inwardly and the portion of said door between the other edgethereof and said point is movable outwardly when said door is opened; incombination with pressure operable means for adapting said mechanism topermit both portions of said door to be moved outwardly as occasionrequires.

5. A device of the class described comprising mechanism for mounting adoor in a doorway whereby one portion of said door is movable inwardlyand another portion of said door is mov- 1o able outwardly when saiddoor is operated to open normally, in combination with pressure operablemeans for changing the normal operation of said mechanism by pushingboth portions of said door outwardly whereby the entire door will swingoutwardly to an open position and means for effecting a restoration ofsaid mechanism for the normal operation of the door by thereafterclosing said door.

6. A device of the class described, comprising 20 mechanism for mountinga door to normally open with a swinging and sliding movement and to beoccasionally opened with a swinging movement, said mechanism comprisingmeans for swingably supporting the door and means for normally 25 saidmechanism comprising a, hinge mounted in a u doorway for swingablysupporting the door between the vertical edges thereof and a guide onthe door for normally causing the door to slide to and from open andclosed position as said door swings on said hinge, in combination withmeans for releasing said guide from the door to per mit said door toswingably open.

8. A device of the class described, comprising mechanism for mounting adoor to normally open with a swinging and sliding movement and adaptedto occasionally open with aswinging movement, said mechanism comprisinga hinge for swingably supporting the door and a guide roller releasablysecured to the top of the door for normally causing the door to slide toand from open and closed position as the door swings on said hinge, incombination with meansfor releasing said guide roller from the top ofthe door to permit said door to swing open, said releasing meanscomprising means adapted to again releasably secure said roller to thetop of the door when the door is closed.

9. A device of the class described comprising in combination a hingemounted in a doorway mullion, a door mounted onthe hinge by means of apair of arms, each having one end secured to said door and the otherends thereof secured to said hinge, a channel mounted above the door,means for releasably securing to the top of said door a guide rolleradapted to run in said channel, said securing means comprising an armhinged at one end to the door and a latch for securing the other end ofsaid-arm to the door, whereby said door is adapted to normally open andclose with a compound sliding and swinging 7o prising means including aguide and a hinge for 1| actuate said detent.

I aoiasas mounting a door adapted to open and close in a doorway withacompound movement; said movement comprising the rotation of said doorabout said guide and the translation of said guide and door with respectto said doorway, in combina-..

tion with pressure operable means permitting said door to be opened andclosed by a movement render said mechanism operable as a mounting onwhich said door maybe opened and closed with a movement of rotationabout the other axis.

12. A device of thecharacter described, comprising in combinationmechanism for mounting a door to normally open and close in a doorwaywith a compound movement of rotation and translation when force isapplied at one edge thereof, a detent for holding said door in an openposition when the door is pressed into engagement therewith, latchingmeans adapted to render the mechanism inoperative to impart the movementof translation to said door as aforesaid by the simultaneous applicationof force at-each edge of said door, said detent and latch means.

each comprising means for varying the pressure necessary to actuate saiddetent and actuate said latch means respectively whereby more pressureis required to actuate the latch means than to 13. 'A device of thecharacter described comprising, in combination me'chanismfor mounting adoor to normally open and close in a doorway with a compound movement ofrotation and translation when force is applied at one edge thereof, adetent for holding said door in an open position when the door ispressed into engagement therewith, latching means adapted to render themechanism inoperative to impart the movement of translation to said dooras aforesaid by the simultaneous application of force at t a each edgeof said door, said detent and latch means each comprising a spring, andmeans for 50.

adjusting the tension of said springs whereby the door may be pushedagainst the detent to actuate the same without operating said latchingmeans.

14. A device of, the class described, comprising mechanism for mountinga door to open with a sliding and' swinging movement by the applicationof force at one edge thereof; in combination with a latch for permittingsaid door to be opened in combination a hinge mounted in a doorway,

a door mounted on the hinge, a pair of arms, each having one end securedto said door and the other ends thereof secured to' said hinge, achannel mounted above the door, means for releasably securing to the topof said door a guide roller adapted to 11111 in said channel, saidsecuring means commisinganarmhingedatoneendto the door,- a latch ,rolleron said arm, and a latch adapted to cooperate with said roller forsecuring the other end of said arm to the door.

16. A device of the character described com- 5 prising, in combinationmechanism for mounting I a door to normallyopen and close in a doorwaywith a compound movement of "rotation and translation when forceisappliedv at one edge thereof, a detent for holding said door in an open10 position when the door is pressed into engagement therewith, saiddetent comprising a notch, and a plunger adapted to cooperatively engagesaid notch, latching means adapted to render the mechanism inoperativeto impart a movement of ill translation to said door as aforesaid by thesimultaneous application of force at each edge of said door, saidlatching means being constructed and adjusted to require more pressureto operate the same than is required to position said plunger in so saidnotch. a

1'7. A device of the class described, comprising mechanism for mountinga door to be opened with a sliding and swinging movement by theapplication of force at one edge thereof, in combi? 26 nation with meansfor permitting said door to be opened with only a swinging movement bythe 7 simultaneous application of force at each edge thereof, and means,for closing said door when it is opened with a swinging and slidingmovement so or holding said door open when it is opened with a swingingmovement.

18. A device of the class described comprising in combination a hingemounted in a doorway mullion, a door mounted on the hinge by means of apair of-arms, each having one end secured to said door and the otherends thereof secured to said hinge, a channel mounted above the door,means for releasably securing to the top of said door a guide rolleradapted to run in said channel, (,0 said securing means comprising anarm hinged at one end to the door and a latch for securing the other endof said arm to the door, whereby said door is adapted to normallyopenand close with a compound sliding and swinging movement when 45 the armis latched to the top of the door and open and close with only aswinging movement when said arm is unlatched; and a spring in said hingeadapted to close said door after it has been opened with the compoundmovement aforesaid and 50 adapted to hold said door open after it isopened with only the swinging movement aforesaid.

19; A device of the character described comprising mechanism formounting a door to normally open and close in a doorwaywith a comllpound movement of. rotation and translation, said mechanism comprisingmeans forming two axes about which said door is adapted to rotate andmeans adapted to render one of said axes inoperative as an axisofrotation and render said so mechanism operable as a mounting on whichsaid door may be opened and closed with a movement of rotation about theother axis, in combination with spring means tending to close said doorwhen it is opened with the compound move- 08 ment and tending to openand holdsaid door open after one of said axes is rendered inoperative.

20. A device of the character described comprising a mechanism formounting a door adapted 70 to be normally opened and closed in a doorwaywith a compound movement of rotation and translation, said mechanismcomprising a doorway mullion, and arms swingably mounted in saidmullion, means adapted to render the mecha- 7| nism inoperative toimpart the movement or translation to said door and change the operationof said mechanism to permit the door to open and close with only themovement of rotation, said arms being adapted to swing in one directionwith respect to said mullion when the door is operated normally and toswing in the other direction when said mechanism is rendered inoperativeto impart the movement of translation to said door, in combination withclearance recesses between said arms and mullion to permit of theunobstructed operation of said arms as aforesaid and leaf means adaptedto close the opening formed by said clearance recess when the door isclosed.

21. A mounting for a door comprising mechanism mounting the door wherebya portion or the door moves in an outwardly direction and the remainingportion moves in an inwardly direction, including a pivot partaking inthe control of said movement, and means operable upon a predeterminedpressure being applied on both portions of the door and releasing thecontrol of said pivot whereby the door moves bodily in one directionon-the mechanism.

22. A device of the class described comprising mechanism mounting a doorto be opened and closed in a doorway with a compound movement ofrotation andtranslation,andmechanism mounting said door to be opened andclosed in said doorway with a movement of rotation alone, in combinationwith pressure operable means for selectively adapting one or the otherof said mechanisms to govern the opening and closing movement of thedoor. I

23. Adevice of the class described, comprising mechanism for mounting adoor to normally open with abodily shiftable movement and to beoccasionally opened with a swinging movement. said mechanism comprisinga first means adapted to be secured to the door at one point andcontrolling the movement of this point of the door, and a second meanssecured to the door at a point spaced from the first point forcontrolling the movement of this second point of the door, incombination with pressure operable means for readily releasing saidsecond means from its control of the door to permit said door toswingably open upon said first means. I v

24. A device of the character described, comprising in combinationmechanism for mounting a door to normally open and close in a doorwaywith a bodily shiftable movement, a detent for holding said door in anopen position when the door is pressed into engagement therewith, and

latching means adapted to render the mechanism inoperative to impart thebodily shiftable movement to said door as aforesaid by the simultaneousapplication of force at each edge of said door.

, said detent and latch means being releasable at difierentpressures-whereby more pressure is required to actuate the latch meansthan to actuate said detent.

25. A device of the class described, comprising mechanism for mounting adoor to normally open with a bodily shiitable movement and to beoccasionally opened with a swinging movement, said mechanism comprisinga pair of hinge arms each of which is adapted to be hingedly secured tothe door in the same vertical axis and hingedly mounted upon the doorwayfor controlling the movement of this point of the door, and a secondmeans secured to the door at a point spaced from the vertical axis forcontrolling the movement of this second point of the door, and pressureopeach of which is adapted to be hingedly secured 10'- to the door inthe same vertical axis and hingedly mounted upon the doorway forcontrolling the movement of this pointof the door, a roller meanssecured to the door and having a roller at a point spaced from thevertical axis, a guide 15 means secured to the doorway for receiving theroller, the guide means and roller means controlling the movement orthis point or the door, and means for readily releasing one o! theaforesaid means from its control of the door to permit 20 said door toswingably open upon said hinged mounting for the hinge arms upon thedoorway.

27. A device of the class described, comprising mechanism for mounting adoor to normally open with a bodily shiftable movement and to 25 beoccasionally opened with a swinging movement, said mechanism comprisinga pair of hinge arms each of which is adapted to be hingedly secured tothe door in the same vertical axis and hingedly mounted upon the doorwayfor controlling the movement of this point of the door, a roller securedto the door at a point spaced from the vertical axis, a guide secured tothe doorway for receiving the roller, the guide and roller controllingthe movement 01' this point of the door, and means for readily releasingthe roller from its control or the door to permit said door to swingablyopen upon said hinged mounting for the hinge arms upon the doorway.

28. A device or the class described, comprising 40 mechanism formounting a door to normally open with a bodily shirtable movement and tobe cccasionally opened with a swinging movement from an axis adjacentone vertical edge or the door, said mechanism comprising a first means45 secured to the door at one point and controlling the movement or thispoint or the door, -a second means controlling the movement or the door,an arm carrying the second means and securing the same to the door at asecond point spaced from 50 the first point, a pivot adapted to hingedlysecure the arm to the door, in combination with pressure operable meansfor releasably securing said arm to the door to permit said arm to bereleased and the door to swingably open. 65

29. A device of the class described, comprising mechanism for mounting adoor to normally open with a bodily shiftable movement and to beoccasionally opened with a swinging movement, said mechanism comprisinga pair of hinge 60 arms each of which is adapted to be hingedly mountedupon the doorway and hingedly secured to the door in the same verticalaxis for controlling the movement of this point or the door, a rollermeans secured to the door at a point spaced 65 from the vertical axis, aguide means secured to the doorway for receiving the roller, the guideand roller controlling the movement of this point of the door, means forreadily releasing one of the aforesaid means from its control or thedoor to permit said door to swingably open upon said hinged mounting forthe hinge arms upon the doorway, and spring means tending to close thedoor when it is opened with a bodily shiitable 7 open when it is openedwith a swinging move-- ment. v

30. A device of the class described, comprising mechanism for mounting adoor to normally open with a bodily shiftable movement and to beoccasionally opened with aswinging movement, said mechanism comprising adoorway mullion having the greater part of two faces cut away forming ahinge arm recess, a pair of hinge arms each or which is adapted to behingedly mounted upon the doorway and hingedly secured to the door inthe same vertical axis for controlling the movement of this point of thedoor, means carried by the doorway and the door at a point spaced fromthe vertical axis for controlling the movement of this point of thedoor, means for readily releasing the aforesaid means from its controlof the door to permit said door to swingably open upon said hingedmounting for the hinge arms upon the doorway, and a clearance recess ineach hinge arm adjacent the hinge mounting into which the mullioncorner. enters upon opening of the door with a swinging movement.

EDWARD H. ELLISON.

